نتایج جستجو برای: fishing crafts

تعداد نتایج: 15317  

2011
Daniel Pauly

CW: concerning predictions, there are two that are fairly robust: primary production limits possible total production, through it will not determine whether a system is stable or not. Here, Ecopath and its dynamic routines, Ecosim and Ecospace can help; equilibrium community composition responds to fishing: as you alter fishing mortality, a number of changes in abundance are predicted. Notably,...

1999
Roy Melville-Smith Mark Cliff Sonia M. Anderton

.................................................................................................... 1 1.0 Introduction .............................................................................................. 2 2.0 Methods ..................................................................................................... 3 2.1 Cockburn Sound fishing trials .................................

2014
Jan Robinson Joshua E. Cinner Nicholas A. J. Graham

Reef fishes that exhibit predictable aggregating behaviour are often considered vulnerable to overexploitation. However, fisher knowledge of this behaviour is often heterogeneous and, coupled with socioeconomic factors that constrain demand for or access to aggregated fish, will influence susceptibility to fishing. At two case study locations in Papua New Guinea, Ahus and Karkar islands, we con...

2016
Shengmao Zhang Shaofei Jin Heng Zhang Wei Fan Fenghua Tang Shenglong Yang

Bottom trawling is one of the most efficient fishing activities, but serious and persistent ecological issues have been observed by fishers, scientists and fishery managers. Although China has applied the Beidou fishing vessel position monitoring system (VMS) to manage trawlers since 2006, little is known regarding the impacts of trawling on the sea bottom environments. In this study, continuou...

Journal: :Chemical communications 2010
Yong Qian Gaoyuan Ma Aifeng Lv Hai-Liang Zhu Jing Zhao Viresh H Rawal

Chiral squaramides are highly enantioselective catalysts for Friedel-Crafts reaction of indoles with N-tosyl imines, affording 3-indolyl methanamine products in 85-96% yields and 84-96% ees.

Journal: :Bioscience, biotechnology, and biochemistry 2009
Ryo Murashige Yuta Murai Yasumaru Hatanaka Makoto Hashimoto

The Friedel-Crafts reaction with 3-(3-methoxyphenyl)-3-(trifluoromethyl)-3H-diazirine and optically active N-TFA-Asp(Cl)-OMe in triflic acid afforded homophenylalanine derivatives without any loss of the optical purity.

Journal: :E3S web of conferences 2021

Based on the protection and inheritance of intangible cultural heritage crafts, this paper takes Dongyang bamboo weaving as an example,introduces Virtual Reality (VR), 3D digital programming other new technologies to crafts. From three following aspects: experience, application infection, summarizes methods processes heritage, finds out meeting point with modern consumer market, makes "live" in...

2007
Pedro Bordalo-Machado Ivone Figueiredo

The evaluation of fish stocks exploitation is a complex task that comprehends the analysis of several types of data including information on the spatial and temporal dynamics of commercial fishing fleets. Satellite-based Vessel Monitoring Systems (VMS) is one of the best independent data sources available that can provide information on fishing fleet operations. This type of system allows the t...

2014
Márcio Luiz Vargas Barbosa-Filho Alexandre Schiavetti Daniela Trigueirinho Alarcon Eraldo Medeiros Costa-Neto

BACKGROUND Fishermen's knowledge is a source of indispensable information in decision-making processes related to efforts to stimulate the management and conservation of fishing resources, especially in developing countries. This study analyzed the knowledge of fishermen from three municipal areas of Bahia in northeast Brazil regarding the behavior repertoire of sharks and the possible influenc...

2013
Kevin L. Pope

There is a growing body of literature that shows internet search volume on a topic, such as fishing, is a viable measure of salience. Herein, internet search volume for ‘fishing’ and ‘angling’ is used as a measure of public interest in fishing, in particular, recreational fishing. An online tool, Google Insights for Search, which allows one to study internet search terms and their volume since ...

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